Question What's the best text-to-speech non-cloud software supporting Polish voice?

[jestemprawiczkiem]

Is IVONA the best speech synthesizer supporting Polish voices so far, just like in 2011?
https://serwis-uslugirozwojowe.parp...ona-ponownie-najlepszy-na-swiecie?Itemid=7063

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Polish speech synthesizer IVONA is once again the best in the world

I am only interested in voices non-cloud software

Are free and good quality speech synthesizers with Polish voices possible, or are the free ones very indistinct?
Are the voices Ewa, Krzysztof, Zosia from Nuance Vocalizer Expressive also from IVONA or is it a different company?

1. What's the best text-to-speech non-cloud software supporting Polish voice?
2. What's the best text-to-speech non-cloud software with English voice?